Press



Feb. 9,1926, 1,572,843

J. J. CHAMBERLAIN PRESS Filed Nov. 11; 1924 4 Sheets-$heet 1 r I I I 57ATTORNEY.

Feb. 9 1926.

J. J. CHAMBERLAIN PRESS Filed Nov. 11, 1924 4 Sheets-Sheet 2 INVENTOR.

A TTORNE Y.

1,572,843 J. J. CHAMBERLAIN PRESS Filed Nov. 11, 1924 4 Sheets-Sheet 5IIUVVENTOR. Jaw f ii/7.95am.

CFF Q Feb, 9,1926. J. J. CHAMBERLAIN PRESS Filed Nov. 11, 1924 INVDITOR.107/ f Caz/yumm OCQ A TTORNE Y.

4 Shee.1:sSheet 4 Patented Feb. 9, 1926, iiUNilfllEil) gears-Ear o esielz.

JOHN J. CHAMBERLAIN, OF AKRONyOHIO, ASSIGNOBHTO THEUNITED"STATES STONE-WARE COMPANY, OF AKRON, OHIO, A CORPORATION OEIOHIO.

PRESS.

Application filed. November 11,1924. SerialNo. 749,147.

To all zohowr'it 92mg concern:

-Be it known that I, Joi-INJ CHAMBER- LAIN, a'citizen of the UnitedStates, residing at Alcrmuizrthe county ofSummit; State of tihiophaveinvented certain new and useful Improvements in Presses, of whichthefollowing is a specification.

This invention relates to presses for making various articles of plasticmaterial such as clay, artiiicial stone compositions and the like. a i

The purpose of the-invention, in general, is to provide apressof-universal applica 'tiontomany different articles of-lstonewa-reincluding pottery, chemicalware and the like, and adapted rapidly andinexpensively to operate, to turn out articlesin largequantities. D

An important fe ature-- of the invention '18 the provision in apress(if-improved means sooperating :v-die that the -l atter may beeither reciprocatedto f'orm ordinary molded articles or reciprocated andalso"rotated to form hollow articles such as'pottery.

AllUtllGl" important feature of the invention is the provisionof arotary table carrying a plurality of molds witlrwhieh the die is adaptedto-cooperate and improved means for intermittently rotating the tableand stopping it with a mold-in proper alignment with the die, t-hersaidmeansbeingcooperatively connected -to the die-operating means so thatmovement of thetable is timedwith respect to the die.

.The' foregoing and-other objects will he better understood when theilollowing detailed description isread in connection with theaccompanying drawings, it belng understood that the invention is notlimited to the specific form th-ereof described and illustrated.

' Of the accompanying drawings:

Figure 1 is afront elevation-0f a press embodying the invention; I

a Figure 2 is a rightside elevatioirthereof;

Figure iii-is a section on line-33 of Figure 1; I

Figuree is. a deta1l plan of the tablerotating device Figure 5 isa-d'etail side elevation thereof;

Figure 6 is a detail front elevation thereof;

Figure 7 is a plan of acarboy stopper whichis one of the many" articlesthe press is adapted-"to'form; and

* extending 1 Figure 8 isanelevation thereof.

* Referringto the drawings, 10 is astand or table having legs 11, llthereon. Atits' forward end the table lO is cut away'toprovide anopening 12 throughwhich extends avertical shaft 13 carrying onits'upperenda rotarytable 14, the shaft 13' being rotatably mounted-inbearings 15 and 16 inwhich it is supported by a projecting sleeve '17 ontable 14 andadaptedto ridecn'thenpper surface of bearing 15 and bytable-driving plate 18 riding on the'upper surface of bearing 16.Bearings 15 and 16 are respectively supported by suitable beams '19and20, spanning legs 11-bel0w the top of table 10.

=The rotary table 14 carries a-iplurality, in this instance, fourmolds*21,"2l"which in the drawings are shown as designed for moldingcar-boy stoppers 22. The molds 21- are replaceable with 'othermoldsformold ing other articles. mold 21-is formed with a projection '23 on itslower end adapted to seat in an aperture 24in, table 1 1- and tobe'sec'ured thereiniby a-setscreworthe like, 25. In'*the bottomof eachmold 21, an ejector plunger '26 is seated,

the plunger being formed with arod27ex tending downwardly through theprojection 23 and through opening '12 so as'tobe' engageable witlra camp'late28 so formed as to lift "the ejector and consequently lift thecompleted article out of theanold after the die has operatedthereon. Camplate 28 may besecured on beam 19 for this purpose.

Movable toward and from the molds 21 as eaclris in a certain angularposition over table 10 a dieQQremovably secured-by set screws 30,30 to across head 31 reciprocable on vertical posts 32,132 which are mounted onthe table 10 and supported by I brackets 33, 33 mounted on the rearoftable 10. The dies 29 have projecting lips 29*,29 downwardly therefromj, and adapted to embrace the molds, 21 to insure accurate positioningthereof beneath the die. The cross-head 31 preferably has a guard plate'31 secured across the front thereof.

For operating the rotary table 14 and reciprocating the cross-head 31.thepress is adapted to be drlven'from any suitable source of power by apulley 34. The pulley 34: is secured onmain drive shaft 35 on which aresecured pinions 36, 36 for driving gears 37, 37. Gears 3'? are securedon drive For this-"purpose each i shaft 38 on which is secured aneccentric disc 39 encircled by a strap 40. Formed on strap 40 is a pawl41 arranged to ride on the upper surface of drive plate 18 which latteris provided with a plurality, in this instance, four pins 42, 42projecting upwardly from its surface and on which are journaledcase-hardened rollers 43, 43. Secured on one side of pawl 41 is a stopblock 44. Secured on gears 37 are crank pins 45, 45 on which are pivotedconnecting rods 46, 46 which are also pivoted on pins 47, 47 formed oncross-head 31.

Inthe making of pottery it is frequently necessary to rotate the die andto this end, instead of securing the die directly to crosshead 31 by setscrews 30, it is preferably secured on the end of a floating shaft 48rotatable in a bearing 49 in cross-head 31 and supported on thecross-head'for reciprocating therewith by a collar 50 riding on theupper surface of bearing 49. Shaft 48 is supported vertically by abearing 51 in a beam 52 spanning the upper ends of posts 32, the shaft48 being vertically slidable in bearing 51. Keyed onto the shaft 48 is abevel gear 53 adapted to ride on the upper surface of bearing 51 andadapted to be employed to drive shaft 48 in any of its positions, thelatter having a key-way 53 extending throughout its length.

Gear 53 may be driven or not, as desired, by a bevel gear 54 secured ona shaft 55, journaled in bearing 56 formed in a bracket 57 which may bemounted on beam 52. Shaft has a sprocket 58 secured thereon which may bedriven by a chain (not shown), driven by a sprocket 59 on shaft 35.

In operation, for making articles such as the carboy stoppers 22, thechain over sprockets 58 and 59 is not employed. The pulley 34 is driven,thus driving shaft 38 which operates eccentric 39 and pawl 41 forwardly,the latter riding into engagement with a roller 43 thus driving plate 18and rotating table 10 until the limit of the forward movement of pawl 41is reached. Block 44 engages a succeeding roller 43 and positively stopsrotation of the tableiand prevents accidental rotation thereof untilpawl 41 rides back over the next succeeding roller whereupon block 44 ismoved out of the path of the rollers by eccentric 39 to permit the nextrotation of the table.

While the table is being rotated, cranks 45 are operating cross-head 31upwardly from its middle position and back downwardly thereto so thatthe die 29 is ineffective during this interval. As pawl 41 rides backover plate 18 and the next succeeding roller 43, and while the block 44is preventing rotating of the table, the die advances downwardly intocooperation with one mold 21 which is positioned directly therebeneathdue to the predetermined relative postioning of rollers 43 with respectto the molds. After the material in the mold has been pressed into shapeby die 29 and while the cross-head is rising to its middle position, thepawl 41 rides over and in back of the next succeeding roller 43 and theshaft 38 continues to rotate the above described operations arerepeated, the molds 21 being operated on in succession.

The material, such as clay, from which the article is formed, is placedin the molds prior totheir passage under the die and the finishedarticles are ejected from the molds by engagement of plunger rods 27with cam plate 28 as the molds come from under the die.

lVhen molding hollow articles, for example, flower posts a die forforming the interior of the pot is used in place of die 29. A chain isthen trained over sprockets 58 and 59 and gear 54 is thus caused tocontinuously rotate gear 53, shaft 48 and the die, the latteraccordingly being rotated during the pressingaction described above toform a smooth surface on the pottery.

Modifications of the invention may be resorted to without departing fromthe spirit thereof or the scope of the appended claims. While themechanism is shown as adapted to manufacture specific articles ofstoneware, it may be used in other branches of the clay industry as willbe understood.

lVhat is claimed is:

1. A machine of-the class described comprising a rotary mold-carryingtable, a die reciprocable toward and from said table, and means forrotating the table and reciprocating the die, said means comprising arotating shaft, an eccentric on the shaft, a drive plate secured to thetable, projections on the drive'plate, a pawl formed on the eccentricstrap and adapted to ride on said plate and to engage the projections, astop plate also on the eccentric strap for engaging the projections, across-head for carrying the die, cranks on the shaft and connecting rodsbetween the cranks and the crosshead.

2. A machine of the class described comprising a rotary mold-carryingtable, a die reciprocable toward and from said table, and means forrotating the table and reciprocating the die, said means comprising arotating shaft, an eccentric on the shaft, a drive plate secured to thetable, projections on the drive plate, a pawl formed on the cocentricstrap and adapted to ride on said plate and to engage the projections, acrosshead for carrying the die, cranks on the shaft and connecting rodsbetween the cranks and the cross-head.

3. A machine of the class described comprising a rotary table, and meansfor imparting intermittent rotation to the table, said means comprisinga continuously rotating shaft, an eccentric on the shaft, a pawl formedon the eccentric strap, a plate secured to the table and arranged sothat the pawl will ride on the surface thereof, and spaced projectionson the plate adapted to be engaged by said pawl.

i. A machine of the class described comprising a rotary element, andmeans for intermittently rotating said element, said means comprising acontinuously rotating shaft, an eccentric disk secured on the shaft, aneccentric strap formed with a pawl and encircling said disk, a surfacerotatable with said element and on which said pawl is adapted to ride,and spaced projections on said surface adapted to be engaged by saidpawl.

5. A machine of the class described comprising a rotary element, andmeans for intermittently rotating said element, said means comprising acontinuously rotating shaft, an eccentric disk secured on theshaft,

an eccentric strap formed with a pawl and with a stop and encirclingsaid disk, a surface rotatable with said element and on which said pawlis adapted to ride, and spaced projections on said surface adapted to beengaged by said pawl andstop.

6. A machine of the class described comprising a rotary element,and'means for intermittently rotating said element, said means includinga continuously rotating shaft and a pawl eccentrically pivoted on saidshaft.

7. In a press of the character described, a rotary table molds spacedcircumferen- 'tially about the table, a die reciprocating toward andfrom the surface of the table, means for intermittently rotating thetable and approximately positioning the. molds in succession under thedie and means on the die for engaging the molds toaccurately positionthe same thereunder.

JOHN J. CHAMBERLAIN.

